@media (-webkit-min-device-pixel-ratio: 1.5), (min-device-pixel-ratio: 1.5)
    .border-1px
        &::after
            -webkit-transform scaleY(.7)
            transform scaleY(.7)

@media (-webkit-min-device-pixel-ratio: 2), (min-device-pixel-ratio: 2)
    .border-1px
        &::after
            -webkit-transform scaleY(.5)
            transform scaleY(.5)


body,html
    line-height 1
    font-weight 200
    font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light', Arial, Helvetica, sans-serif;

.clearfix
    display inline-block
    &:after
        display block
        content: "."
        height 0
        line-height 0
        clear both
        visibility hidden
        
    